Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, will point to this new site.

The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.

Phleum alpinum L.
Coefficient of Conservatism: 10
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Grass
Status: X
Phleum alpinum B. S. Slaughter

A species of moist meadows and shores; collected from Keweenaw Co. by O. A. Farwell several times from 1890 to 1942, but none of his labels have habitat data. He does note early on (1904): "The only place I have found it is at Mt. Houghton near the northern end of the Keweenaw Peninsula" but some of his later specimens came from the Lake Superior shore. It is mysterious that this species, which Farwell apparently collected a number of times, both from ridgetops inland and along the Lake Superior shore, has not been seen recently.

A native boreal and alpine species quite disjunct to the Lake Superior region with a short and relatively thick spike-like panicle. Occasional specimens of P. pratense with short panicles are often misidentified as this species, but differ in having shorter awns and in most or all other characters that tend to distinguish P. pratense: base of culm ± enlarged and bulbous, summit of culm very minutely roughened [20×], ligule usually with distinct notch on each side, sheaths not inflated. In P. alpinum, the base of the culm is not bulbous and the summit is perfectly smooth, the ligule is not notched on both sides, and the upper leaf sheaths are ordinarily somewhat inflated.


Keweenaw County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 28, 2023.